Finding the Fourth Proportional to 5,418,965.75, 8,128,475.72 and 1,375,454.78
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Solution
The fourth proportional to 5,418,965.75, 8,128,475.72 and 1,375,454.78 is: 2,063,189.05
Step by Step Solution
- Step 1: Write the proportion equation
5,418,965.75 : 8,128,475.72 = 1,375,454.78 : x - Step 2: Convert to fraction form
5,418,965.75/8,128,475.72 = 1,375,454.78/x - Step 3: Cross multiply
5,418,965.75x = 8,128,475.72 × 1,375,454.78 - Step 4: Simplify right side
5,418,965.75x = 11,180,350,806,947.77 - Step 5: Solve for x
x = 11,180,350,806,947.77/5,418,965.75 - Step 6: Final answer
x = 2,063,189.05
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.